Incandescent-lamp socket.



No. 737,890. PATENTED-SEPT. 1, 1903. J. L. YOST & 0. E. KENNEY.,

INGANDESOENT LAMP SOOKBT.

APPLICATION FILE-D JUNE 12-. 1903.

N0 MODEL,

: "NW 28 sm| UNTTED. STATES Patented September 1, 1903.

PATENT OFFICE.

JOSEPH L. YOST AND OWEN E. KENNEY, OF TOLEDO, OHIO, ASSIGNORS TO THE YOST ELECTRIC MANUFACTURING COMPANY, OF OHIO.

lNCANDESCEN'I-LAMP SOCKET.

SPECIFICATION forming part of Letters Patent No. 737,890, dated September 1, 1903.

Application filed June 12, 1903. Serial No. 161,128. (No model.)

To ctZZ whom it may concern.-

Be it known that we, JOSEPH L. YOsT and OWEN E. KENNEY, citizens of the United States, residing at Toledo, in the county of Lucas and State of Ohio,have invented certain new and useful Improvements in Incandescent-Lamp Sockets; and we dohereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to certain new and useful improvements in incandescent-lamp sockets, and more particularly to that class shown and described in Letters Patent No. 698,394, granted April 22, 1902, to L. 1. Dixon,

assignor t0 the Yost Miller Company, and in which the switch mechanism is located in an insulated chamber within a porcelain or other insulator-barrel composed of two blocks secured together through the medium of cond uctor-plates and screws, as fully illustrated and described in said Letters Patent.

Our invention has for its object to secure a rigid and strong connection between the insulator-blocks and the conductor-plates to which the circuit-wires are connected and a ready assemblage of the parts.

It also has for its object the ready assemblage of the several parts and to provide an open passage between the chambers in which the conductor-plates are located, and with these ends in View our invention consists in the details of construction and arrangement hereinafter more particularly described.

In order that those skilled in the art to which our invention appertains may know how to make the same and appreciate its advantages, we will proceed to describe the same, referring by numerals to the accompanying drawings, in which- Figure 1 is a vertical section taken 011 the line 03 0c of Fig. 4, the dotted lines representing the ordinary sheet-metal protecting shell and base. 2 is a similar section on the line y y of Fig. 4 looking in the direction of the arrow. Fig. 3 is a side elevation, partly in section and at a right angle to the position shown at Fig. 2. Fig. 4 is a top plan view of the lower block or section of the insulatorbarrel, and Fig. 5 is a bottom plan view of the upper block or section of the insulator-barrel.

Similar numerals represent like parts in the several figures of the drawings.

1 is an upper block or section of insulating material, such as porcelain, of the barrel, within which is located the switch mechanism, and 2 is the lower block orsection of such barrel. The upper block 1 is formed with a diametrie cavity 3, within which the cam- ()0 block 4 of the switch-operating key 5 is free to be rotated, and it is also formed with a transverse recess 6, constituting one-half of the bearing for the spindle of the switch-key 5, and with suitable recesses '7 and 8 at the ends of the recess 0, adapted to receive a washer and hub, respectively, on the keyspindle, which prevent longitudinal movement of the same. The block 1 is also formed with a segmental recess or chamber 9 on one side to receive one end of the conductor plate or arm 10. The outer portion of the cavity 3 constitutes the seat for the second conductor plate or arm.

The lower block or section 2 is formed with bearings 6, 7, and 8, similar to the corresponding bearings in the upper block and for the same purpose, and it is also formed with a diametrie vertical recess 11 to receive the vibrative spring-switch 12 and one of the conductor plates or arms and with a'slightlyraised web or transverse wall 13, which constitutes a bearing for the returned end of the spring-switch 13, as clearly shown at Figs. 2 and 4. This block 2 is also formed with a recess or chamber 14 in one side corresponding with the recess or chamber 9 of the upper block and adapted to receive the conductor plate or arm 10 and the binding post or screw of one of the circuit-wires. o

15 is a mortise adapted to receive the lower end of the conductor plate or arm, which is returned on the under side of the block, as clearly shown at Fig; 1. This detail of construction facilitates-securing the end of the 5 conductor plate or arm 10 by the screw 16 and prevents any lateral movement or vibration of said arm, thus. establishing a rigid and fixed relation between said arm and the block 2 and relieves the screws which secure the conductor-arms and insulator-blocks from undue strain and aids in preserving the es ber 9 of the upper block by a vertically-disposed screw 17.

A second conducting plate or arm 18 is located within the outer ends of the recesses or chambers 3 and 11 of the blocks 1 and 2, and the returned ends of said plate or arm are rigidly secured to the respective blocks by screws 19 and 20, (see Fig. 2,) the latter also securing the returned end of the springswitch 12 in position through the medium of a nut 21 as clearly shown, and constituting an electrical connection between the switch 12, the conductor-plate 18, and the lamp attachment 22.

The securing-screws 16, 17, 19, and 20 pass through suitably-located channels or holes 23 in the insulator-blocks 1 and 2, and the lower block 2 is provided with arch-shaped countersinks surrounding the holes 23, adapted to receive nuts 25, into which the screws 16 and 26 are threaded.

27 is radial conductor-plate secured in the diametric recess 11 of the lower block by a screw 28 and nut 29, the latter constituting a contact with one of the lamp-terminals in the ordinary manner, and the outer end of this conductor-plate is slightly thickened or raised to contact with the free end of the vibrating switch 12 when it is depressed in an obvious manner by the switch-key cam 4:.

Each of the conductor plates or arms 10 and 18 is provided with binding-screws 30 for connecting the circuit-wires in the usual manner.

Between the diametric recess or chamber 11 and chamber 14 of the lower block 2 is an open passage 31,wl1ich permits free inspection of the interior devices without rendering it necessary to separate the blocks 1 and 2 for that purpose. The polarity-post or conductorplate 10, having its bearing within the mortise 15 in the periphery of block 2 and its extreme lower end in a suitable radial mortise on the under side of said block, not only secures a rigid connection between the post and the block, but produces such a distance of location between said post and the contact of the switch mechanism as to avoid the possibility of short-circuitin g.

The electrical connections and lamp-ten minals are substantially such as those illustrated and described in the Letters Patent hereinbefore referred to and form no part of our invention, which resides solely in the construction of the insulator-blocks and the in anner of securing them in proper relation with the switch mechanism.

What we claim as new, and desire to secure by Letters Patent, is-

1. In an incandescent-lamp socket such as described the switch-containing barrel composed of two blocks of insulating material the upper one formed with a diametic recess adapted to receive the cam of the key-spindle and to constitute a seat for one of the circuitwire-connecting posts, and with a transverse seat or bearing for the key-spindle, and also with a radial recess or chamber for the reception of a second circuit-wire-connecting post; the lower block formed with a diametric recess adapted toreceive a vibrative switch and one end of one of the circuit-wire-connecting posts, a transverse diametric seat or hearing.

for the key-spindle and with a vertical and a radial mortise for the reception of the lower end of a second circuit-Wire-connecting post, substantially as and for the purpose set forth.

2. In an incandescent-lamp socket such as described the upper and lower switch-containing insulating-blocks formed with switch-containing recess, and seats for the circuit-wire posts, connected together as described, and with an open passage-way or gate between the switch-containing recesses and the radial recesses or chambers within which is located one of the circuit-wireconnecting posts, substantially as and for the purpose set forth.

3. In an incandescent-lamp socket such as described, two blocks of insulating material adapted to contain the switch mechanism and operating-key, connected together by circuitwire posts, one located within diametric channels or recesses in the adjacent faces of the blocks and the other in another locality in radial recesses or chambers in the blocks and having its lower end seated within peripheral and radial mortises in the lower block, substantially as hereinbefore set forth.

In testimony whereof we affiX our signatures in presence of two witnesses.

JOS. L. YOST. OIVEN E. KENNEY. WVitnesses IDA RICKET, OHAs. A. Yosr.

ICC 

